<template>

  <el-card class="box-card">
    <div slot="header" class="header-card">
      <span>图书借阅管理系统</span>
    </div>
    <el-form :model="user" :rules="rules" ref="user">
      <el-form-item prop="username">
        <el-input suffix-icon="el-icon-user-solid" v-model="user.username" clearable placeholder="请输入用户名称"></el-input>
      </el-form-item>
      <el-form-item prop="password">
        <el-input suffix-icon="el-icon-s-goods" v-model="user.password" clearable type="password" placeholder="请输入密码">
        </el-input>
      </el-form-item>
      <el-button type="success" plain @click="login">登录</el-button>
    </el-form>

  </el-card>
</template>

<script>
  export default {
    data() {
      return {
        rules: {
          username: [{
            required: true,
            message: '请输入用户名称',
            trigger: 'blur'
          }],
          password: [{
              required: true,
              message: '请输入密码',
              trigger: 'blur'
            }
          ],
        },
        user: {
          username: '',
          password: ''
        }
      }
    },
    methods: {
      login() {
        this.$refs['user'].validate((valid) => {
          if (valid) {
            this.$http.get('http://114.55.238.138:9000/api/user/login',{
              params:this.user
            })
            .then(res=>{
                   if(res.data.data==null){
                         this.$message.error('你输入的用户名称或者密码不正确，或者账号被锁定，请联系管理员');
                   }else{
                     sessionStorage.setItem("username",res.data.data)
                      this.$router.push('/welcome');
                   }

            })
            .catch(e=>{
              this.$message.error('错了哦，网络异常');
            })
    
          }
        });
    
      }
    }

  }
</script>

<style scoped>
  .box-card {
    width: 550px;
    height: 280px;
    border-radius: 10px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 10px 20px 30px #888888;
  }

  .login-form {
    position: absolute;
    bottom: 0px;
    width: 100%;
    padding: 0px 20px;
    box-sizing: border-box;
  }

  .el-button {
    display: flex;
    justify-content: center;
    width: 100%;
    font-weight: bold;
    height: 40px;
    font-size: 18px;
    border-radius: 10px;
  }

  .header-card {
    display: flex;
    justify-content: center;
    font-size: 18px;
  }

  .el-input {
    border-radius: 10px;
    height: 50px;
    font-size: 18px;
    border-bottom-color: green;

  }
</style>
